Water-heater gas burner



April 29, 1930. R. c. HoYT WATER HEATER GAs BURNER Filed Dec. 9. 192e 2 sheets-sheet 1 April 29, i930. R, c. HoYT WATER HEATER GAS BURNER Filed Deo. 9, 1926 2 Sheets-Sheet '2 yPatented Apr. 29, 1930 UNITED STATES PATENr omnes ROBERT c. rnforce, or OAKLAND, oALrFonNrA Application led December The present invention relates to improve-` ments in gas burners and has particular reference to a burnerv adaptedto be used in connection withan automatic orl instantaneous water heater, 4in, which a heating coil is arranged above the ,burner andthe burner started by the flow of water through the heating coil and'litl by means of a pilot light. An arrangementv of this character presents the problem, how to protect the burner from the products of condensation and other matter dropping from the heating coils and thereupon, and which productsvand matter are apt to ,clog the holes of the burner and render the same less effective. v

`It is the principal object of the present invention to solve this problem, and to arrange the burner relative to the heating coil in such a manner that the perforations of the burner lie'outside the dripping? Zone of the heater while a pan is arranged to` receive the drippings. VIt is further proposed to arrange the pan insuch a manner that itsuedges are immediately subject to the heat of the burner iame,so,that any condensates droppingin thel pan are vaporized. It is-further proposed to arrange vthe perforations of the burner in such a manner thatthe burner flame emanates from the burner at an angle, so that it strikes the heating coil directlyT althoughthe burner is disposed4 outside of the dripping Zone.

' Itis further proposed in the present invention to provide a double burner yeffect by arranging two :concentric burners, one lying rinside of and the other outside of anannular tween the two burners for the purpose of catching the drippings .aswell as for the purpose of guiding the draft of atmospheric air into the immediate vicinity of the burner l flame. A further object of the invention is to arrange structural details in such a manner that the draft rises on opposite sides ofv each burner flame-and comes into-immediate.

Contact therewith. .v

Itis further proposed to provide improved features in connection 'with a burner yof the 9, 192e. seriai no. 153,506.

character described that will facilitate the assembling and the taking apart of the same without necessitating the .removal of the gas feed pipe structure from the heater.

Otherv and further objects ofthe invention will appear as the specification proceeds.

The preferred form of the invention is illustrated in the accompanying drawings in which: I

Figure l shows a top plan of. my burner, certain parts being broken away to disclose interior parts thereof. y i Fig. 2 is a Vcentral vertical section through my burner with a portion of the heating coil superimposed thereon. y

Fig. 3 is an end face View of a feed'tube used in connection with my burner.

Fig. 4 is a top plan of a dripping panjand Fig. 5 is a side view of the same.

Fig. 6 is a top plan of my outer burnery ring with its gas chamber and feed tube, and Fig. 7 is a central vertical section through the same. p- Y Fig. 8 is a top plan ofa supporting pan for my burner, and Fig. 9 is a central vertical section through the same. l

Fig. 10 is a fragmentary sectional detail illustrating the manner in which the burner is supported on the supporting pan.

Fig. 11 is a bottom plan of my inner burner ring, and Fig. 12 is a side view thereof. l y While I have shown only the preferred form of the invention, I wish to have itunderstood that various changes or v,modifications rnay be made. within the scope of the claims hereto attached without departing from the spirit of the invention.

Referring to the drawings in detail, the

supporting panl whichmay rest on suitable legs not shown'in the drawings, is annular in form and consists of a bottom ring 2, an outwardly slanting outer wall 3 and-an in wardly slanting' inner wall l lso asto leave a central air passage 5. The twowalls are reinforced and interconnected by suitable webs 6. A section of the bottom ring is raised as shown at 7 by the flanged extensions 8 ofk the inner Wall 4, which latter extensions are bridged by the arc 9 adapted to formV a roofi for the feed tube of my burnertobe men VVtioned hereinafter. Three ears are formed Figs. 6 and 7, comprises a flat gas chamber 13Y having four horizontal hollow arms l4, .extending therefrom in radiall direction,` the arms curving upwardly at their outer ends and terminating in the hollow burner ring consisting of two complementary sections 16 and 17 separated by the usual wire gauze 18 and interconnected by bolts 19. The upper section is formed with two slanting surfaces 20 and 21 intersecting at 22 to form a ridge7 and the inner surface 2O is provided with a series of perforations 23 surrounded by small embossments 24. vIt will be noted that the axis of these perforations slant inwardly toward the axis of the burner and at a point above thel latter. Y Y

The central gas chamber 13 has also three vertical tubes V25 rising therefrom which latter direct the gas into the inner burner ring to be described hereinafter. 26 which connects with the gas pipe 27 of the distributing system (see Fig. 2) is arranged horizontally and radially under the burner and discharges into the center thereof as shown at 28. Its outer end flares, as at l 29, and Vis partly closed by a transverse bar 30 (Fig. 3), which latter is recessed, as at31, to provide a seat for the gas pipe 27. It will be noted that this construction allows the burner to Vbe inserted and removed Vby a tilt-A Vand to be vsecured thereto byv bolts 33. f The said burner has also small lugs 34 projecting from the arms thereof to serve as supports for the drip pan to be described later and is formed with slots 35 in small webs. 35

` extending from two of the arms, by `means of whichthe drip pan is positioned, aswill appear later. Y

The inner burner ring 36 illustrated in Y detail in Figs. 11'and 12, is formed of comface45 is provided with a plurality of perforations 46 extending through small emboss- The feed tube j ments 47 and slant outwardly` s o as to give the flame emanating from these perforations an outward slantiiig direction as indicated in Fig. 2. The inner burner is in the-form of a ring with an open center 48 which is `Vbridged by a transverse bar 49 allowing kthe inner burner ring to besecured to the outer burner ring 'by means ofa screw 50l extend ing through theV bar 49 into a boss 51 rising from the center of the Vouter burner.

When the two burner rings are thus' secured together they form an annular depression between the same, as appears from Fig. 2. the depression being open since it is formed by the radial arms of the outer burner so that air may rise therethrough.v `-In this depression is accommodated the drip i pan 52 formed with a fiat bottom 53, an out wardly slanting outer wall 54 and an inward-l ly slanting inner wall 55. Y This pan is illustrated in detail in Figs. 4 and'5 and has four lugs 56 projecting from the bottom face. adapted to rest on'the lugs 34 rising from the arms of the outer burner, whiletwo further lugs 57 extending from the bottom of the pan are adapted to project through the slots 35 in the webs 35 so as to definitely position l the pan. These lugs are held against removal by cotter pins (not shown) insertible tliroughholes 57. The upperedgesfof the pan extend to within close proximity of and slightly above the two burner rings so that,i the walls of the pan not only guide the draftV of secondary air immediately pastfthe peff; rations of the burner but are also heatedl by the burner flames for the evaporation ofthe condensate that may drop on the pan. -A re'- cess 58 is formed in the outer vwall andthe outer edge of the bottom of the pan to''a"c'-, coinmodate'the ypilot burner (not shown).

The remaining structure of my Aarrangement includes the ybase 59'resting on the edge'v of this superstructureis that the heating coil K and preferably the inner acket' are arranged vertically above the drip pan 52 so that,`any;

condensates or other substances dropping` from the heating coil and the jacket are caught by the drip pan and are 'pre-vented from clogging up the perforations of either burner. Y

It will be seen from the above description that Vthe construction and the mannerv'of assembling my burner is .very simple. After the supporting panl has been suitablv placed, the outer burner may be positioned therein by guiding the feed tube 26 through the open center and under the roof'form'ed by the arc'f 9 until the outer end passes over the pipe iso 27 when the burner may be droppedin place,` w

which will seat the pipe 27 in'the recess 31 in the webs 35.

in the bar across the open end of the feed tube.

'The lugs 32 of the burner, during this operation, drop into the ears of the supporting pan and are secured thereto by the bolts 33 (see Fig. 10). Next the Inner burner is v positioned vso that the embossmentsy 4t2 telethe two burners are altogether outside of the dripping Zone while the iames of the burners strike the coil as effectively as they would if the burner were placed directly below the heating coil, and that secondary atmospheric air is guided by the drip pan into immediate proximity of the burner ames. The draft is also caused to rise between thefouter ring andy the supporting pan and through the open inner ring, and the slanting top surfaces of the two burner rings allow the rising air to immediately commingle at the discharge zones of the two burners.

Having thus described my invention, what I claim as new is as follows: l

l. A burner of the character described comprising a gas chamber, two sets of tubular discharge karms extending therefrom, and two independent burner rings supported on the sets of arms respectively and arranged in concentric relation7 the saidrings provided with perforations arranged to dischargethe gas in a column defined bythe burner rings.

2. A burner of the character described comprising a gasV chamber, two sets of discharge arms extending therefrom, two burner rings supported on the setsof arms respectively and arranged in concentric relation, the arms being formed to provide a depression between the same, and an annular pan adapted to be seated in saiddepression.

der, a recessed element at the entrance of the feeding tube allowing a gas pipe to be seated in the recess thereof and allowing the burner to be tilted relative to the pipe for the purposes of assembly or removal. 6. A burner of the character described comprising two concentric burner rings, each hav.- ing two slanting upper surfaces intersecting `to form a ridge and discharge perforations arranged in one of the surfaces, and guide means arranged relative to the two burner rings so as to guide rising air toward and along the slanting surfaces into the immediate proximity of the burner flame.

In testimony whereof, I affix my signature.

ROBERT C. HOYT.

3. A burner of the character described com# prising two concentric burner rings formed with perforations discharging toward a column defined by the rings, and an annular pan supported between the rings, theedges of the pan being adjacent the perforations in the burner rings so as to be heated by flames emanating therefrom. y' y 4. A burner of the character described comprising two concentric burner rings formed with perforations slanting upwardly and torward one another, and guide means interposed between the rings causing rising air to be guided into the immediate vicinity of the burner perforations.

5. A burnerof the characterv described having a radial feeding tube disposed thereun- 

